Powers:Growing Powers: could increase size to various degrees, with corresponding levels of super-human strength.

Weaknesses:Had limits on the largest size to which he could increase without damaging himself, and had to take care not too change too often. On some occasions, was stuck at larger-than-normal sizes for extended periods of time.

Bio:One of the early aliases of Henry Pym, who used the eponymous Pym particles to alter his size. In the early years of his super-heroic career, Pym alternated between shrinking himself down to act in the role of Ant-Man, and later often grew larger as Giant-Man. In both roles, he played a part in the earliest days of the Avengers. Pym would later take on a number of other code-names, and suffer a series of personal problems.

Notes:In his early days, Pym would distinguish between "Ant Man" and "Giant Man" as two different aliases and distinct sets of powers. The character would often appear in stories while billed as one or the other, or both characters, depending upon which size changes he underwent. Created by Jack Kirby, Stan Lee, & Larry Lieber.

#1 - 'Destiny Made Manifest'#2 - 'Now is the Time for All Good Men...'#3 - 'The City at the Heart of Forever'#4 - 'Running Out of Time'#5 - 'Past Imperfect... Future Tense!'#6 - 'In the Meantime'#7 - 'Into a Limbo... Large and Broad'#8 - 'The Secret History Of The Avengers'#9 - 'Break: Reflections Of The Conqueror'#10 - 'Tomorrow And Tomorrow And Tomorrow...'#11 - 'The Destiny War!'#12 - 'Avengers Assemble!'

#5 - 'What If Captain America And Bucky Had Both Survived World War II?'#10 - 'What If...Jane Foster Had Found the Hammer of Thor?'#29 - 'What If...The Avengers Were the Last Superheroes on Earth?'#37 (Newsstand Edition) - 'What If...The Beast and The Thing Continued To Mutate?'#44 - 'What If...Captain America Were Not Revived Until Today?'